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  1. #1
    Join Date
    Jul 2004
    Location
    Poughkeepsie, Ny
    Posts
    632
    Are there any special considerations when sizing mini splits for homes? I've been told there are.

    This is what I have. I have a small home with no attic.

    2 Rooms connected by a doorway.

    Walls = R19
    Ceiling = R30
    Floor=Carpet

    Home is covered in shade

    NW=42.21 Double pane
    NE= 20 Metal / Foam core door /solid w/storm
    29.38 double pane
    SE= 17.77 Metal / Foam core door /solid w/storm
    5.5 Double Pane
    SW= 37.04 Doule Pane

    Room 1 is 34 x 15 x 8 Kit/Liv
    Room 2 is 21 x 15 x 8 Bed/bath

    I came up with 9000 btu's for Room1 and 7000 for room 2. Or 1.5 for the whole home.


    [Edited by atufano on 07-09-2005 at 02:06 PM]
    Happiness is the only good. The time to be happy is now. The place to be happy is here. The way to be happy is to make others so.
    -Robert Green Ingersoll

  2. #2
    igwt777 is offline Professional Member - T&B bad email address
    Join Date
    Jul 2005
    Posts
    172
    In my opinion minisplit are overrated in terms of capacity BTUH.

  3. #3
    Join Date
    Feb 2003
    Posts
    1,996
    2 seperate rooms is the issue. You'll never get the second room at the same temp through a doorway. Maybe a 2 zone unit with 2 evaporators, one for each room (9K BTU each), these are pricey.

  4. #4
    Join Date
    Jul 2001
    Location
    Gold Coast of Connecticut
    Posts
    4,616
    You could use one of those small doorway fans that mount in the corner of the door.
    Aire Serv of SW Connecticut- Gas heat, dual fuel and central a/c systems installed and serviced

  5. #5
    Join Date
    Jul 2004
    Location
    Poughkeepsie, Ny
    Posts
    632
    Originally posted by johnsp
    2 seperate rooms is the issue. You'll never get the second room at the same temp through a doorway. Maybe a 2 zone unit with 2 evaporators, one for each room (9K BTU each), these are pricey.
    That is what I suggested, by when you try to route the lineset over, it gets ugly. and the customer wants the discrete look. Plus the supply house wanted to put in a 1 ton unit in that one room. So I suggested we do the one (easy) room and then worry about the other one later.

    [Edited by atufano on 07-09-2005 at 02:31 PM]
    Happiness is the only good. The time to be happy is now. The place to be happy is here. The way to be happy is to make others so.
    -Robert Green Ingersoll

  6. #6
    Join Date
    Feb 2003
    Posts
    1,996
    The 9K BTU units are not that costly. I can pick up 2 units for less then a single 2 zone model. More electric wiring and you need the added footprint for the 2nd condenser.

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